Improvement in thill-couplings



JAMEs E. HILL, oF ELEETwooD, PENNSYLVANIA.

IMPROVEMENT IN THlLL-COUPLINGS.

Specification forming part of Letters Patent No. 185,363, dated March13, 1877; application iiled v February 17, 1877.

Improved ThillfCoupling, ofwhich the follow-v ing is a specification:

In the accompanying drawing, Flgure 1 represents a vertical longitudinalsection of my improved *chill-coupling, and Fig. 2 a top View of thesame.

Similar letters of reference indicate corresponding parts.

This invention has reference to an improved thill-coupling, by which theshafts may be readily shifted from one carriage to another, the saineworking, when attached, inan easy and quick manner, and without frictionor noise, and without danger of gettin g detached from. the carriage. l

The invention consists of a shaft box or bearing, with hinged topor capattached by a clip to the axle. The center-pin of the shaft or thillattachment turns in the box, and is retained therein by a locking-levermechanism, that binds on a tongue of the cap. f

In the drawing, A represents a tixed bearing of my improvedthin-coupling, that is secured, in the customary manner, by the clip A',to the axle of the vehicle, the clip A' being bent around the axle andattached to the same by a binding-plate, and by the screw-nuts a attheends otthe clips, in the customary manner. To the outer end `of thefixed bearing A is hinged the top part or cap C, that forms, with thebearing A, the box in which the center-pin B' of the shaft attachment orband B turns. A tongue, b, of the top or cap U, extends toward the clipA', and is locked, after the center-pin B' has been placed into the boxA C, by the double lever D D1, oi' which the side links D are pivotedinto a recess of the fixed bearing, While the top part or plate D1 ispivoted to the ends of the links D, and provided at the other end with aswinging plate, D2, that tits into the space between the end ot' tongueb and clip A', being seated on `bearing A, so as to rigidly lock the topplate or part D1 over the tongue b, and retain the hinged cap, andthereby the center-pin B', inl position in the box or bearing.

By raising the locking-plate DZ out of its position between tongue andclip, the top' plate and links may be swung back so as to clear thetongue, and admit the opening of the box and the detaching of the shaftsin quick and convenient manner.

Having thus described my invention, I claim as new and'desire to secureby Letters Patent- 1. A s an improvement in thin-couplings, thecombination ofthe stationary bearing or support A, hinged cap C, andcenter -pin B' of shaft attachment B, with a lockingv device D Dl D',applied between cap and clip, to rigidly lock the shaft coupling or box,substantially as and for the purpose set forth.

2. The combinationA of the cap C, having tongue b, with the pivoted sidelinks D,'piv oted top plate D1, and swinging locking-plate D2, seatedbetween tongue and clip, substantially as and for the purpose speciied.

JAMES F. HILL.

Witnesses:

CHARLES F. HILL, SoLoN ANGs'IADT.

